YFGPS 4,8 Internals

Finally, I opened my GPS.

It's a YFGPS, with 4,8" screen and bluetooth handsfree bought at dealextreme.
http://www.dealextreme.com/details.dx/sku.26916

I'll describe the steps for acces to it's internals. It's easy to open, and don't have any special issue.
First all, you should remove 4 little screws:

Next step should be remove the upper frame. It's a pressure system and it could be removed using only our fingernail, be careful with microphone and his cable.
When the frame are removed, you can see the touch screen.
You should pull carefully the touchscreen

and have acces to PCB.
Now, to access at rear PCB side, you sould remove 5 screws:and GPS are disassembled. In the next image, you can see a couple of pins, it's possible that these pins are a serial or JTAG. Next time i'll test this.
The battery dimensions are 5mm of depth and over 50mmx30mm. I forgot to get a better measure, sorry.
Edit: Battery dimensions are 34x45x5mm (34x52x5mm with protector), and the battery hollow are 36.5x47.5x8mm